Guard against trust management vulnerabilities in Wireless Sensor Network
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Trust management system in Wireless Sensor Network (WSN) is rudimentary to identify malicious, selfish and compromised nodes. Many proposed trust management systems provide security to WSN from various internal attacks. However, like other security systems, trust management schemes are also vulnerable to attacks. In this paper, we have proposed a lightweight trust management scheme based on penalty and reward policy. We have investigated three different types of attacks against the trust management scheme and provide a defense mechanism for those attacks. The proposed mechanism is based on dynamic time sliding window for calculating the trust value of the nodes and finding out the behavior of the nodes. Theory and simulation show that the proposed GATE method has a high detection rate of the malicious nodes and it demands fewer resources than some of the recently proposed trust management schemes.
KeywordsTrust management Vulnerabilities Attacks Trust regain Dynamic sliding window
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